Alert archive / New Jersey / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 18, 1998, 10:56 AM EST for Burlington County, New Jersey; Bucks County, Pennsylvania. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 18, 1998, 10:56 AM EST (15:56 UTC)
- Expired
- Feb 18, 1998, 11:30 AM EST
- In force
- 34 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Burlington County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 15:59 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 3.9 hours before the alert went out and 126 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1164 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
532 WUUS1 KPHL 181557 RRA SVRPHL NJC005-PAC017-181630- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1056 AM EST WED FEB 18 1998 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN PENNSYLVANIA ...SOUTHERN BUCKS COUNTY IN NEW JERSEY ...EXTREME WESTERN BURLINGTON COUNTY AT 1055 AM EST... RADAR AND SPOTTER REPORTS SHOWED A SEVERE THUNDERSTORM IN PHILADELPHIA COUNTY MOVING INTO SOUTHERN BUCKS COUNTY AND EXTREME WESTERN BURLINGTON COUNTY. SPOTTER REPORTS INDICATE HAIL UP TO NEARLY ONE INCH IN DIAMETER. THIS IS A DANGEROUS STORM. MOVE INSIDE A STRONG BUILDING AND DO NOT STAND NEAR WINDOWS. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. DO NOT DRIVE YOUR CAR WHERE WATER COVERS THE ROADWAY. THE WATER MAY BE DEEPER THAN YOU THINK. IF CAUGHT IN RISING FLOOD WATERS... ABANDON YOUR CAR QUICKLY AND MOVE TO HIGHER GROUND. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION OUTLET. WWR/JM &
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 10:31 AM EST | Severe Thunderstorm Warning | PHI | Camden | 34 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1998Severe Thunderstorm Warnings in Pennsylvania, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.